Summary:
In the church of Philippi, there were envy, rivalry and selfish ambition. Apostle Paul was writing to them to stand firm in one spirit and have one mindset of Jesus Christ. To become one mind, there's one thing needed. It is humility. Based on verses 3-4, humility is placing ourselves lower than where we are supposed to be, and sacrificing our interests to seek others'. How can one have this humility?
Apostle Paul brings the story of Jesus, his life and death. We can find three things through which Jesus grows humility. First is his identity. He knew who he was and what to do through the fellowship and communication with God. By having a clear identity, Jesus was able to humble. Second, he lived  with other people as a man, by experiencing all kinds of human relationship for 30 years. Through this, he was able to bear the fruit of humility. Lastly, he was obedient. Obedience is a characteristic of a humble person, but at the same time obedience produces humility as well. 
In order to have humble mindset of Jesus, we should know who we are from the view of God, live with others in a community, and be obedient to the authorities around us. 

Summary:
Jesus, the king of all, came to the world as a king. He was born in Bethlehem, to the house of David. Shepherds and magi worshiped him, and the heavenly hosts and angels praised. 
However, the baby king was laid in a manger, not on a luxury bed. Why?
First of all, the king in a manger shows what kind of king Jesus is. Jesus' kingship was humble. He is not oppressing but lowering, and not greedy but loving. This humble messiah rejected  by the Jews because it was contradictory to their expectation. In order not to make a same mistake as Jews, we should humbly go to God, as God humbly came to us. 
Secondly, the king in a manger shows what kind of love he has. Jesus spent all 40 weeks in his mother's womb. He spent all the baby time, toddler time and childhood, which are not even recorded in the bible. Why? Couldn't he become a human without other easier and faster way? I believe he could have. Then, why did he spend all the time, being fed, protected, and raised by his parents? It is love. If you are in love, you want to be like other parts. You want to share everything with your lover. And through incarnation God did the exact thing. God became like us. This is the love God showed us. And this is the love that we should have and bring to our neighbors in this Christmas season. 
As we celebrate the birth of Jesus Christ, let us humbly go to God, and bring His love to our neighbors!!